<template>
    <div
        :class="className"
        :style="{height:height,width:width}"
    />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

export default {
	mixins: [resize],
	props: {
		className: {
			type: String,
			default: 'chart'
		},
		width: {
			type: String,
			default: '100%'
		},
		height: {
			type: String,
			default: '350px'
		},
		autoResize: {
			type: Boolean,
			default: true
		},
		chartData: {
			type: Object,
			required: true
		}
	},
	data() {
		return {
			chart: null
		}
	},
	watch: {
		chartData: {
			deep: true,
			handler(val) {
				this.setOptions(val)
			}
		}
	},
	mounted() {
		this.$nextTick(() => {
			this.initChart()
		})
	},
	beforeDestroy() {
		if (!this.chart) {
			return
		}
		this.chart.dispose()
		this.chart = null
	},
	methods: {
		initChart() {
			this.chart = echarts.init(this.$el, 'macarons')
			this.setOptions(this.chartData)
		},
		setOptions({ expectedData, actualData } = {}) {
			this.chart.setOption({
				xAxis: {
					data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
					boundaryGap: false,
					axisTick: {
						show: false
					}
				},
				grid: {
					left: 10,
					right: 10,
					bottom: 20,
					top: 30,
					containLabel: true
				},
				tooltip: {
					trigger: 'axis',
					axisPointer: {
						type: 'cross'
					},
					padding: [5, 10]
				},
				yAxis: {
					axisTick: {
						show: false
					}
				},
				legend: {
					data: ['expected', 'actual']
				},
				series: [
					{
						name: 'expected',
						itemStyle: {
							normal: {
								color: '#FF005A',
								lineStyle: {
									color: '#FF005A',
									width: 2
								}
							}
						},
						smooth: true,
						type: 'line',
						data: expectedData,
						animationDuration: 2800,
						animationEasing: 'cubicInOut'
					},
					{
						name: 'actual',
						smooth: true,
						type: 'line',
						itemStyle: {
							normal: {
								color: '#3888fa',
								lineStyle: {
									color: '#3888fa',
									width: 2
								},
								areaStyle: {
									color: '#f3f8ff'
								}
							}
						},
						data: actualData,
						animationDuration: 2800,
						animationEasing: 'quadraticOut'
					}
				]
			})
		}
	}
}
</script>
